typhoon h battery warning

So i took my Typhoon H up for its first flight. All i basically did was hover at different altitudes and moved short distances taking a series of pictures. From the first pic to the last pic was only about 15mins. Then i was forced to land with low voltage warning. The battery meter on the st16...

So i took my Typhoon H up for its first flight. All i basically did was hover at different altitudes and moved short distances taking a series of pictures. From the first pic to the last pic was only about 15mins. Then i was forced to land with low voltage warning. The battery meter on the st16...